What Causes Car Battery Drain in Cold Weather?

[LeAllison]

The reasons for car battery drain in cold weather are: 1. The switches of electrical devices were not turned off during parking; 2. There is current leakage in the vehicle body; 3. The battery's power supply performance has declined. The impacts of car battery drain include: 1. Affecting the battery's lifespan - frequent power loss will shorten its service time; 2. Preventing the car from starting normally and making other electrical devices inoperable. The functions of a car battery are: 1. Providing power to the starting system, ignition system, and electronic fuel injection system when starting the engine; 2. Supplying power to vehicle electrical devices when the engine is off or at low idle; 3. Assisting in powering electrical devices when the generator's output is insufficient; 4. Mitigating voltage surges in the electrical system to protect electronic equipment in the vehicle.